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CNIT 344 EXAM 2 QUESTIONS
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CNIT 344 EXAM 2 QUESTIONS
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CNIT 344 EXAM 2 QUESTIONSIPv4 - Answers -connectionless (the sender doesn't know if the receiver is present or if
the packet arrived or if the receiver can read the packet), unreliable (IP does not have
the capability to manage and recover from undelivered or corrupt packets, so other
protocol layers manage reliability), media independent
32 bits/4 bytes - Answers -Key piece of the IP Packet Header, length of IPv4 header
Type of service - Answers -Key piece of the IP Packet Header, 8 1-bit fields, QoS,
DSCP
Flag and Fragment Offset - Answers -Key piece of the IP Packet Header, used in
reconstruction of any fragments
Time to Live - Answers -Key piece of the IP Packet Header, maximum hops before
undeliverable
Protocol - Answers -Key piece of the IP Packet Header, upper layer protocol
(TCP/UDP)
True - Answers -T/F: In NAT, 1 or more public IP addresses are assigned to a routing
device and multiple internal clients use private IP addressing
PAT - Answers -used when there is more than one machine that is needing NAT, uses
next available port
gateway - Answers -Port forwarding is typically done at the destination network's ?
Reverse ARP - Answers -broadcast a request for the IP address associated with a
given MAC address, responds with an IP address, only assigns an IP address (not the
default router and subnet mask)
broadcast, unicast - Answers -An ARP request is a ?; an ARP reply is a ?
Address Resolution Protocol (ARP) - Answers -method to send a packet/frame to
another computer when the sending computer does not know the MAC address of the
receiving computer, just the IP address of it, operates at datalink layer,
Bootstrap Protocol (BootP) - Answers -host can configure its IP parameters at boot
time, not only assigns IP, but also assigns default router and network mask, operates at
network layer
2 (MAC address) , 3 (IP address) - Answers -To communicate, on an internetwork, a
host needs logical knowledge of layer ? address and Layer ? address
, DHCP - Answers -a framework for passing configuration information to hosts on a
TCP/IP network, client server architecture
Pack - Answers -The lease time starts for DHCP when the DHCP sends the DHCP ?
Automatic Private IP Addressing (APIPA) - Answers -if a DHCP client is unable to locate
a DHCP server and has no other configs, the computer configures itself with a
169.254.0.0/255.255.0.0 address; the computer then checks to make sure that address
is not in use (through ARP request) and will attempt up to 10 different IP addresses
DHCP Scope - Answers -defines a set of IP addresses and associated configuration
information that can be supplied to a DHCP client
Available address pool - Answers -remaining viable addresses DHCP is allowed to
assign dynamically
DHCP Reservation - Answers -ensures that a device will always receive the same IP
address when renewing its lease (static IPs), an IP address is set aside, or reserved, for
a specific network device that has the Media Access Control (MAC) address associated
with that IP address
Internet Control Message Protocol (ICMP) - Answers -offers messages to provide
feedback about network operations and delivery of datagrams
IP - Answers -ICMP uses ? for the delivery of its messages
False - it is required - Answers -T/F: ICMP is not required in every IP deployment
Type - Answers -in the ICMP message format, defines the message format and options
Code - Answers -in the ICMP message format, defines additional operational actions of
a specific message type
Source and destination address - Answers -Key piece of the IP Packet Header, the two
32 bit binary values
Network and host - Answers -two parts of an IPv4 address
Default gateway - Answers -the address of the router interface, must be on the same
network as all of the hosts
Address resolution - Answers -the process of mapping a hardware address to a higher-
layer protocol address (maps IPv4 address to specific MAC address)
CIDR Notation - Answers -putting a slash after an IPv4 address that represents the
number of network bits, also known as classless routing
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